-19=9-7a

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Solution for -19=9-7a equation:


Simplifying
-19 = 9 + -7a

Solving
-19 = 9 + -7a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '7a' to each side of the equation.
-19 + 7a = 9 + -7a + 7a

Combine like terms: -7a + 7a = 0
-19 + 7a = 9 + 0
-19 + 7a = 9

Add '19' to each side of the equation.
-19 + 19 + 7a = 9 + 19

Combine like terms: -19 + 19 = 0
0 + 7a = 9 + 19
7a = 9 + 19

Combine like terms: 9 + 19 = 28
7a = 28

Divide each side by '7'.
a = 4

Simplifying
a = 4

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